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This page provides a list of educational videos related to Classifying Polygons. You can also use this page to find sample questions, apps, worksheets, lessons , infographics and presentations related to Classifying Polygons.
number of triangles from polygons
By Elites Grid Academy
A brief video detailing the the number of triangles from polygon
Vertical angles
By Khan Academy
By using our knowledge of supplementary, adjacent, and vertical angles, we can solve problems involving the intersection of two lines. Including this one!
Quadrilateral angles
By Khan Academy
Sal proves that opposite angles of a parallelogram are congruent.